Trolley bearing



y 27, M. D. STALDER Q 1,760,020

TROLLEY BEARING Filed July 2'7, 1928 a aw t I 1x12554258;-

ATTORNEY Patented May 27, 1930 UNITED STATES ATEN -OFFICE MERLE D- STALDER, or CLEVELAND, orrro; ASSIGNOR OF'ONE-FOURTH TO JAMES F.

I CAFFREY, 0F CLEVELAND, OHIO TROLLEY Application filed July 27,

This invention primarily relates to a new v and improved type of trolley harp.

An object of the invention comprehends a rotatable element of sufficient length to permit the trolley wire to remain in contacting engagement therewith while the vehicle is rounding curves etc.

Another object of the invention contemplates a supporting structure for the rotat able element.

An additional object of the invention con sists in the provision of bearing members for the rotatable element upon the supporting structure. I

More specifically stated the supporting structure is resiliently retained in position for use whereby the rotatable element will be tensioned against the trolley wire when the vehicle encounters uneven road beds.

With the above and other objects in view, the invention further consists in the following novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawing and pointed out in the appended claims.

In the drawing Figure 1 is a side elevation of the invention.

Figure 2 is an end elevation thereof.

Figure 3 is a sectional view'taken through one of the bearing members.

Figure 4 is a detail sectional view taken through the connection of one of the bearing members and the adjacentportion of the rotatable element.

Figure 5 is a plan view of a replacement for the rotatable element.

with the adjacent ends of the links 28 and '29, is adapted to be extended through the block 12 and suitably'connected with the adapted to accommodate the adjacent por- BEARING 1922. Serial nogzeasis.

ed to support dielectric cup-shaped members 17 to insulate bearing members 18 from said housing. A shaft 19, carrying a rotatable element or drum 20, is extended through dielectric bushings 21 in adjacent sides of the housings 16 and keyed or otherwise fixed to thebearings 18, substantially as illustrated in Figure 4 of the drawing Trough members 22, carried within the housings 16 beneath the undersides of the bearings 18, are adapted to retain surplus oil, whereby the bearings as rotated will be bathed in the lubricant retained thereby.

Brushes 23, loosely connected with the shaft .19 between the spiders at the ends of the rotatable element 20 and the bushings 21,

are adapted for connection with channeled legs 24.

. successions of pivoted links 25, 26 and 27 respectively, arranged in end to end relation and depending from each of the channeled legs 24, are adapted for connection at their lowermost ends with links 28 and 29 respectively. A terminal 30, .pivotally. connected driving'mechanism of the vehicle, not shown.

Connecting bars 31 are passed through the pivot connections 14 between-the leg members 10 and 13 in the manner as illustrated in F igure 2 of; the drawing, whereby swaying 0f the supporting apparatus will be obviated.

. Folding elements, in the nature of rods 32, having pivotal connection at their lowermost ends with the block 12 adjacent the pivot "connections 11 forthe legs 10, terminate to provide horizontally disposed 'U-shaped extremities '33 upon the uppermost ends and tions of the legs 10. Retractile springs 34 are employed to provide the means of con- .nection'between the pairs of rods 32whereby the rotatable element 20 will be normally tensioned to occupy the position shown i1: Figures 1 and'2 of the drawing.

Inasmuch as the rotatable element 20 is constructed in the manner set forth, a trolley wire may shift from either side of the center thereof when the car sways or the trol 00 uppermost portions of the legs 13. Connecting links 36, having connection with the connectiiigbars 35, are'associatfed with a com mon pull-37 passed through an aperture 38in the block 12. A disk 39,'carried at'anappropriate point in the length of the pull 37 and of sufficient size to facilitateinsertion within the aperture 38, is adapted to engage the tion between the brushes and I a common terminal, rods pivotally mounted adjacent the lowermost ends of the legs, U-shaped por tionsrcarried upon the uppermost portions of the rods'and receiving said legs, and spring element's establishing onnection b etw' en the Campinas rods to yi'eldin'glfy retain t e legs and harp in position for use. r r In testimony whereof I-aflix my sin at -e.

1 MERLE D: s'rALi E underside of"'the"-block"12when the rote:,ta liile V element and supporting structure is lowered by stress e'xercisec'lupon ahandle member 40 depending fromthe" lowermost e'nd'of' the pull: Said pulliisiextended"within:the'body of the vehicle whereby the harp may beoperated from ftheinside; I v V V The invention is susceptible; of various changes in its rent; proportions and minor detailsof construction, andlthe right is herein reserved to make such'changeisas properly fall-withinthe's'cope of the: appended claims. 7

Having thus described the invention," what is claimed is" H 7 r 1: A trolley harp construction comprising pivotally 'con-ne'cted'j legs," bearing members 'carriedupon theuppermost ends thereof, an

elongated harp ofcylindrical form'having the axle thereforournaled'within' saidbear- V ings, brushes having connection with the aiile being 'adapted to transmit electricahenergy therefrom, and "cup-shaped members 'c'a rri'ed within the bearingmembers toi'insulatethe endsof said axle from the legs.

2. A trolle yf harp construction comprising pivotally connected legmembersf bearing 7 members carriedupon' theuppermost 'ends being adapted to insulat'etheerids of said thereof, a harp of cylindrical formation havmg the ends of'the axle therefor 'jo'urn'aled within said bearings; dielectric cup-shaped members carrled'w'ithin t-hebearingmembers. V

axle fromthejlegs,brushcshavingconnection Q J with the aforementioned"portions of said axle, and a multiplicity of link memberslbeing adapted top'rovide the meansofconnection between the br'u's'heshnd" a common terminal.

3.'Atrolley harpco strueuonj' dmp isia V pivotally' connected :leg 'me'mbers, bearing members carried upon the uppermost ends tliereofla harp of cylindrical formation having the ends'of the axle, therefor journaled within said bearings, dielectric cup-shaped members carried Within the bearing members being-adaptedto insulate the ends of said axle from the "legs,'brushes having lconnection, 'with i the a orementioned. portions of mu p ic y o l i k' n b rsfbeing adapted'to provide "the means of c0nneo-- 

